The old, suggested stocking #s at 10 to 1 was for producing fish for food during the depression. Newer models for recreation (depending on goals) for southern ponds use higher BG/RES #s to sustain LMB populations for an extra year or so. 20 to 1 for regular pond goals and 30 to 1 for trophy LMB ponds are now common. Those are just starter #s and mgt is necessary after stocking.